foot mattress的意思|示意

Nestled among the branches, up off the ground, there’s a nine-foot-diameter hardwood floor and groovy round mattress inside.

它位于数的枝干之间，地面之上，里面有一个直径九英寸的硬木板和一个绝妙的圆形床垫。

The pillow, covered with ticking, and without a case or lace, was laid on the blankets folded up on the foot of the mattress, whose covering was visible, and on which no one was ever to sleep again.

细棉布的枕心，没有枕套也没有花边，放在褥子脚头折叠好了的被套上，垫褥露出了麻布套子，没有人再来睡了。

These are placed at the foot of the bed, usually under the mattress and are secured by under mattress straps.

这些都是置于床脚，通常在有担保的床垫和床垫下带的。